Child branch triggering build for parent

I branched off of master with a branch called circle_testing and I have an active pull request for that branch. In the meantime, I branched off circle_testing to create a new branch called coverage. If I push coverage with git push --set-upstream origin coverage then on the pull request for circle_testing on github, it displays that the CircleCI test is running, and if it fails, it’ll say that circle_testing is failing tests.

I don’t want this behavior. Is this supposed to happen?